Soluble dendrimer-coated magnetic nanoparticles: Synthesis and applications

ORGN 91

Chuansong Duanmu, chuansongduanmu@yahoo.com, Yan Zheng, tjuzhengyan@hotmail.com, and Yong Gao, ygao@chem.siu.edu. Department of Chemistry and Biochemistry, Southern Illinois University, 224 Neckers Hall, Carbondale, IL 62901
Dendrimer-coated iron oxide nanoparticles are a novel class of materials useful for many chemical and biological applications. For example, dendrimer-iron oxide complexes could be used for cellular MR imaging. They can also be functionalized for supporting magnetically recyclable homogeneous industrial catalysts. Our group has recently synthesized a series of magnetic nanoparticle-dendrimer complexes. Triphenylphosphine ligands were tethered to the dendrimer termini and employed for catalyzing Suzuki coupling reactions. After reactions, the Pd catalyst immobilized on dendrimer-nanoparticles could be easily recovered and recycled by using an external permanent magnet.